<html>
<head>
	<meta charset="UTF-8">
	<meta content="IE=edge" http-equiv="X-UA-Compatible">
	<meta content="initial-scale=1.0, maximum-scale=1.0, user-scalable=no, width=device-width" name="viewport">
	<title>4592：[Shoi2015]脑洞治疗仪</title>
	<!-- css -->
	<link href="../css/base.min.css" rel="stylesheet">
	<link href="../css/project.min.css" rel="stylesheet">
	
	<!-- favicon -->
	<!-- ... -->
</head>
<body class="page-brand">
	<header class="header header-transparent header-waterfall ui-header">
		<ul class="nav nav-list pull-left">
			<li>
				<a data-toggle="menu" href="#menu">
					<span class="icon icon-lg">menu</span>
				</a>
			</li>
		</ul>
		<a class="header-logo header-affix-hide margin-left-no margin-right-no" data-offset-top="213" data-spy="affix">[Shoi2015]脑洞治疗仪</a>
		<span class="header-logo header-affix margin-left-no margin-right-no" data-offset-top="213" data-spy="affix">[Shoi2015]脑洞治疗仪</span>
	</header>
	<nav aria-hidden="true" class="menu" id="menu" tabindex="-1">
		<div class="menu-scroll">
			<div class="menu-content">
				<a class="menu-logo" href="../index.html">BZOJ离线题库</a>
				<ul class="nav">
					<li>
						<a class="waves-attach" data-toggle="collapse" href="#problems">题目</a>
						<ul class="menu-collapse collapse in" id="problems">
							<li>
								<a class="waves-attach" href="../index.html">主页</a>
							</li>
							<li>
								<a class="waves-attach" href="../list.html">题目列表</a>
							</li>
						</ul>
					</li>
					<li>
						<a class="collapsed waves-attach" data-toggle="collapse" href="#about">关于</a>
						<ul class="menu-collapse collapse" id="about">
							<li>
								<a class="waves-attach" href="../about.html">关于此项目</a>
							</li>
						</ul>
					</li>
					
				</ul>
			</div>
		</div>
	</nav>
	<main class="content">
		<div class="content-header ui-content-header">
			<div class="container">
				<h1 class="content-heading">
                [Shoi2015]脑洞治疗仪                </h1>
                <p>时间限制：20s&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  空间限制：256MB</p>			</div>
		</div>
		<div class="container">
			<section class="content-inner margin-top-no">
				<div class="row">
					<div class="col-lg-13 col-md-13">
						<div class="card margin-bottom-no">
							<div class="card-main">
								<div class="card-inner">
									
                                <h3>题目描述</h3><p><div>曾经发明了自动刷题机的发明家SHTSC又公开了他的新发明：脑洞治疗仪--一种可以治疗他因为发明而日益增大的脑洞的神秘装置。</div>
<div>为了简单起见，我们将大脑视作一个01序列。1代表这个位置的脑组织正常工作，0代表这是一块脑洞。</div>
<div>1<span class="Apple-tab-span" style="white-space:pre">	</span>0<span class="Apple-tab-span" style="white-space:pre">	</span>1<span class="Apple-tab-span" style="white-space:pre">	</span>0<span class="Apple-tab-span" style="white-space:pre">	</span>0<span class="Apple-tab-span" style="white-space:pre">	</span>0<span class="Apple-tab-span" style="white-space:pre">	</span>1<span class="Apple-tab-span" style="white-space:pre">	</span>1<span class="Apple-tab-span" style="white-space:pre">	</span>1<span class="Apple-tab-span" style="white-space:pre">	</span>0</div>
<div>脑洞治疗仪修补某一块脑洞的基本工作原理就是将另一块连续区域挖出，将其中正常工作的脑组织填补在这块脑洞中。</div>
<div>（所以脑洞治疗仪是脑洞的治疗仪？）</div>
<div>例如，用上面第8号位置到第10号位置去修补第1号位置到第4号位置的脑洞。我们就会得到：</div>
<div>1<span class="Apple-tab-span" style="white-space:pre">	</span>1<span class="Apple-tab-span" style="white-space:pre">	</span>1<span class="Apple-tab-span" style="white-space:pre">	</span>1<span class="Apple-tab-span" style="white-space:pre">	</span>0<span class="Apple-tab-span" style="white-space:pre">	</span>0<span class="Apple-tab-span" style="white-space:pre">	</span>1<span class="Apple-tab-span" style="white-space:pre">	</span>0<span class="Apple-tab-span" style="white-space:pre">	</span>0<span class="Apple-tab-span" style="white-space:pre">	</span>0</div>
<div>如果再用第1号位置到第4号位置去修补第8号位置到第10号位置：</div>
<div>0<span class="Apple-tab-span" style="white-space:pre">	</span>0<span class="Apple-tab-span" style="white-space:pre">	</span>0<span class="Apple-tab-span" style="white-space:pre">	</span>0<span class="Apple-tab-span" style="white-space:pre">	</span>0<span class="Apple-tab-span" style="white-space:pre">	</span>0<span class="Apple-tab-span" style="white-space:pre">	</span>1<span class="Apple-tab-span" style="white-space:pre">	</span>1<span class="Apple-tab-span" style="white-space:pre">	</span>1<span class="Apple-tab-span" style="white-space:pre">	</span>1</div>
<div>这是因为脑洞治疗仪会把多余出来的脑组织直接扔掉。</div>
<div>如果再用第7号位置到第10号位置去填补第1号位置到第6号位置：</div>
<div>1<span class="Apple-tab-span" style="white-space:pre">	</span>1<span class="Apple-tab-span" style="white-space:pre">	</span>1<span class="Apple-tab-span" style="white-space:pre">	</span>1<span class="Apple-tab-span" style="white-space:pre">	</span>0<span class="Apple-tab-span" style="white-space:pre">	</span>0<span class="Apple-tab-span" style="white-space:pre">	</span>0<span class="Apple-tab-span" style="white-space:pre">	</span>0<span class="Apple-tab-span" style="white-space:pre">	</span>0<span class="Apple-tab-span" style="white-space:pre">	</span>0</div>
<div>这是因为如果新脑洞挖出来的脑组织不够多，脑洞治疗仪仅会尽量填补位置比较靠前的脑洞。</div>
<div>假定初始时SHTSC并没有脑洞，给出一些挖脑洞和脑洞治疗的操作序列，你需要即时回答SHTSC的问题：</div>
<div>在大脑某个区间中最大的连续脑洞区域有多大。</div>
<p></p></p><hr/><h3>输入格式</h3><p><div>
<div>第一行两个整数n，m。表示SHTSC的大脑可分为从1到n编号的n个连续区域。有m个操作。</div>
<div>以下m行每行是下列三种格式之一。</div>
<div>0 l r ：SHTSC挖了一个从l到r的脑洞。</div>
<div>1 l0 r0 l1 r2 ：SHTSC进行了一次脑洞治疗，用从l0到r0的脑组织修补l1到r1的脑洞。</div>
<div>2 l r ：SHTSC询问l到r这段区间最大的脑洞有多大。</div>
<div>n,m &lt;=200000，1&lt;=l&lt;=r&lt;=n</div>
</div>
<p></p></p><hr/><h3>输出格式</h3><p><div>对于每个询问，输出一行一个整数，表示询问区间内最大连续脑洞区域有多大。</div>
<p></p></p><hr/><h3>样例输入</h3><pre>10 10
0 2 2
0 4 6
0 10 10
2 1 10
1 8 10 1 4
2 1 10
1 1 4 8 10
2 1 10
1 7 10 1 6
2 1 10
</pre><hr/><h3>样例输出</h3><pre>3
3
6
6
</pre><hr/><h3>提示</h3><p>没有写明提示</p><hr/><h3>题目来源</h3><p>By 佚名上传</p>
								</div>
							</div>
						</div>
					</div>
				</div>
				
				
			</section>
		</div>
	</main>

	<div class="fbtn-container">
		<div class="fbtn-inner">
			<a class="fbtn fbtn-lg fbtn-brand-accent waves-attach waves-circle waves-light waves-effect" data-toggle="dropdown" aria-expanded="true"><span class="fbtn-text fbtn-text-left">Menu</span><span class="fbtn-ori icon">apps</span><span class="fbtn-sub icon">close</span></a>
			<div class="fbtn-dropup">
				<a class="fbtn fbtn-brand waves-attach waves-circle waves-light waves-effect" href="../list.html" target="_self"><span class="fbtn-text fbtn-text-left">题目列表</span><span class="icon">menu</span></a>
				<a class="fbtn fbtn-green waves-attach waves-circle waves-effect" href="../index.html" target="_self"><span class="fbtn-text fbtn-text-left">返回主页</span><span class="icon">home</span></a>
				<a class="fbtn waves-attach waves-circle waves-effect" href="http://www.lydsy.com/JudgeOnline/submitpage.php?id=4592" target="_blank"><span class="fbtn-text fbtn-text-left">提交代码</span><span class="icon">send</span></a>
				<a class="fbtn fbtn-orange waves-attach waves-circle waves-effect" href="http://www.lydsy.com/JudgeOnline/wttl/wttl.php?pid=4592" target="_blank"><span class="fbtn-text fbtn-text-left">试题讨论</span><span class="icon">chat</span></a>
				
			</div>
		</div>
	</div>

	<!-- js -->
	<script src="../js/jquery.min.js"></script>
	<script src="../js/base.min.js"></script>
	<script src="../js/project.min.js"></script>
</body>
</html>